<?php
//=======================================================================
// File:        jpgraph_ttf.inc.php
// Description: Handling of TTF fonts
// Created:     2006-11-19
// Ver:         $Id: jpgraph_ttf.inc.php 1858 2009-09-28 14:39:51Z ljp $
//
// Copyright (c) Aditus Consulting. All rights reserved.
//========================================================================
 
// TTF Font families
define("FF_COURIER",10);
define("FF_VERDANA",11);
define("FF_TIMES",12);
define("FF_COMIC",14);
define("FF_ARIAL",15);
define("FF_GEORGIA",16);
define("FF_TREBUCHE",17);
 
// Gnome Vera font
// Available from http://www.gnome.org/fonts/
define("FF_VERA",18);
define("FF_VERAMONO",19);
define("FF_VERASERIF",20);
 
// Chinese font
define("FF_SIMSUN",30);
define("FF_CHINESE",31);
define("FF_BIG5",32);
 
// Japanese font
define("FF_MINCHO",40);
define("FF_PMINCHO",41);
define("FF_GOTHIC",42);
define("FF_PGOTHIC",43);
 
// Hebrew fonts
define("FF_DAVID",44);
define("FF_MIRIAM",45);
define("FF_AHRON",46);
 
// Dejavu-fonts http://sourceforge.net/projects/dejavu
define("FF_DV_SANSSERIF",47);
define("FF_DV_SERIF",48);
define("FF_DV_SANSSERIFMONO",49);
define("FF_DV_SERIFCOND",50);
define("FF_DV_SANSSERIFCOND",51);
 
// Extra fonts
// Download fonts from
// http://www.webfontlist.com
// http://www.webpagepublicity.com/free-fonts.html
// http://www.fontonic.com/fonts.asp?width=d&offset=120
// http://www.fontspace.com/category/famous
 
// define("FF_SPEEDO",71);  // This font is also known as Bauer (Used for development gauge fascia)
define("FF_DIGITAL",72); // Digital readout font
define("FF_COMPUTER",73); // The classic computer font
define("FF_CALCULATOR",74); // Triad font
 
define("FF_USERFONT",90);
define("FF_USERFONT1",90);
define("FF_USERFONT2",91);
define("FF_USERFONT3",92);
 
// Limits for fonts
define("_FIRST_FONT",10);
define("_LAST_FONT",99);
 
// TTF Font styles
define("FS_NORMAL",9001);
define("FS_BOLD",9002);
define("FS_ITALIC",9003);
define("FS_BOLDIT",9004);
define("FS_BOLDITALIC",9004);
 
//Definitions for internal font
define("FF_FONT0",1);
define("FF_FONT1",2);
define("FF_FONT2",4);
 
//------------------------------------------------------------------------
// Defines for font setup
//------------------------------------------------------------------------
 
// Actual name of the TTF file used together with FF_CHINESE aka FF_BIG5
// This is the TTF file being used when the font family is specified as
// either FF_CHINESE or FF_BIG5
define('CHINESE_TTF_FONT','bkai00mp.ttf');
 
// Special unicode greek language support
define("LANGUAGE_GREEK",false);
 
// If you are setting this config to true the conversion of greek characters
// will assume that the input text is windows 1251
define("GREEK_FROM_WINDOWS",false);
 
// Special unicode cyrillic language support
define("LANGUAGE_CYRILLIC",false);
 
// If you are setting this config to true the conversion
// will assume that the input text is windows 1251, if
// false it will assume koi8-r
define("CYRILLIC_FROM_WINDOWS",false);
 
// The following constant is used to auto-detect
// whether cyrillic conversion is really necessary
// if enabled. Just replace 'windows-1251' with a variable
// containing the input character encoding string
// of your application calling jpgraph.
// A typical such string would be 'UTF-8' or 'utf-8'.
// The comparison is case-insensitive.
// If this charset is not a 'koi8-r' or 'windows-1251'
// derivate then no conversion is done.
//
// This constant can be very important in multi-user
// multi-language environments where a cyrillic conversion
// could be needed for some cyrillic people
// and resulting in just erraneous conversions
// for not-cyrillic language based people.
//
// Example: In the free project management
// software dotproject.net $locale_char_set is dynamically
// set by the language environment the user has chosen.
//
// Usage: define('LANGUAGE_CHARSET', $locale_char_set);
//
// where $locale_char_set is a GLOBAL (string) variable
// from the application including JpGraph.
//
define('LANGUAGE_CHARSET', null);
 
// Japanese TrueType font used with FF_MINCHO, FF_PMINCHO, FF_GOTHIC, FF_PGOTHIC
// Standard fonts from Infomation-technology Promotion Agency (IPA)
// See http://mix-mplus-ipa.sourceforge.jp/
define('MINCHO_TTF_FONT','ipam.ttf');
define('PMINCHO_TTF_FONT','ipamp.ttf');
define('GOTHIC_TTF_FONT','ipag.ttf');
define('PGOTHIC_TTF_FONT','ipagp.ttf');
 
// Assume that Japanese text have been entered in EUC-JP encoding.
// If this define is true then conversion from EUC-JP to UTF8 is done
// automatically in the library using the mbstring module in PHP.
define('ASSUME_EUCJP_ENCODING',false);
 
 
//=================================================================
// CLASS LanguageConv
// Description:
// Converts various character encoding into proper
// UTF-8 depending on how the library have been configured and
// what font family is being used
//=================================================================
class LanguageConv {
    private $g2312 = null ;
 
    function Convert($aTxt,$aFF) {
        if( LANGUAGE_GREEK ) {
            if( GREEK_FROM_WINDOWS ) {
                $unistring = LanguageConv::gr_win2uni($aTxt);
            } else  {
                $unistring = LanguageConv::gr_iso2uni($aTxt);
            }
            return $unistring;
        } elseif( LANGUAGE_CYRILLIC ) {
            if( CYRILLIC_FROM_WINDOWS && (!defined('LANGUAGE_CHARSET') || stristr(LANGUAGE_CHARSET, 'windows-1251')) ) {
                $aTxt = convert_cyr_string($aTxt, "w", "k");
            }
            if( !defined('LANGUAGE_CHARSET') || stristr(LANGUAGE_CHARSET, 'koi8-r') || stristr(LANGUAGE_CHARSET, 'windows-1251')) {
                $isostring = convert_cyr_string($aTxt, "k", "i");
                $unistring = LanguageConv::iso2uni($isostring);
            }
            else {
                $unistring = $aTxt;
            }
            return $unistring;
        }
        elseif( $aFF === FF_SIMSUN ) {
            // Do Chinese conversion
            if( $this->g2312 == null ) {
                include_once 'jpgraph_gb2312.php' ;
                $this->g2312 = new GB2312toUTF8();
            }
            return $this->g2312->gb2utf8($aTxt);
        }
        elseif( $aFF === FF_BIG5 ) {
            if( !function_exists('iconv') ) {
                JpGraphError::RaiseL(25006);
                //('Usage of FF_CHINESE (FF_BIG5) font family requires that your PHP setup has the iconv() function. By default this is not compiled into PHP (needs the "--width-iconv" when configured).');
            }
            return iconv('BIG5','UTF-8',$aTxt);
        }
        elseif( ASSUME_EUCJP_ENCODING &&
        ($aFF == FF_MINCHO || $aFF == FF_GOTHIC || $aFF == FF_PMINCHO || $aFF == FF_PGOTHIC) ) {
            if( !function_exists('mb_convert_encoding') ) {
                JpGraphError::RaiseL(25127);
            }
            return mb_convert_encoding($aTxt, 'UTF-8','EUC-JP');
        }
        elseif( $aFF == FF_DAVID || $aFF == FF_MIRIAM || $aFF == FF_AHRON ) {
            return LanguageConv::heb_iso2uni($aTxt);
        }
        else
        return $aTxt;
    }
 
    // Translate iso encoding to unicode
    public static function iso2uni ($isoline){
        $uniline='';
        for ($i=0; $i < strlen($isoline); $i++){
            $thischar=substr($isoline,$i,1);
            $charcode=ord($thischar);
            $uniline.=($charcode>175) ? "&#" . (1040+($charcode-176)). ";" : $thischar;
        }
        return $uniline;
    }
 
    // Translate greek iso encoding to unicode
    public static function gr_iso2uni ($isoline) {
        $uniline='';
        for ($i=0; $i < strlen($isoline); $i++) {
            $thischar=substr($isoline,$i,1);
            $charcode=ord($thischar);
            $uniline.=($charcode>179 && $charcode!=183 && $charcode!=187 && $charcode!=189) ? "&#" . (900+($charcode-180)). ";" : $thischar;
        }
        return $uniline;
    }
 
    // Translate greek win encoding to unicode
    public static function gr_win2uni ($winline) {
        $uniline='';
        for ($i=0; $i < strlen($winline); $i++) {
            $thischar=substr($winline,$i,1);
            $charcode=ord($thischar);
            if ($charcode==161 || $charcode==162) {
                $uniline.="&#" . (740+$charcode). ";";
            }
            else {
                $uniline.=(($charcode>183 && $charcode!=187 && $charcode!=189) || $charcode==180) ? "&#" . (900+($charcode-180)). ";" : $thischar;
            }
        }
        return $uniline;
    }
 
    public static function heb_iso2uni($isoline) {
        $isoline = hebrev($isoline);
        $o = '';
 
        $n = strlen($isoline);
        for($i=0; $i < $n; $i++) {
            $c=ord( substr($isoline,$i,1) );
            $o .= ($c > 223) && ($c < 251) ? '&#'.(1264+$c).';' : chr($c);
        }
        return utf8_encode($o);
    }
}
 
//=============================================================
// CLASS TTF
// Description: Handle TTF font names and mapping and loading of
//              font files
//=============================================================
class TTF {
    private $font_files,$style_names;
 
    function __construct() {
 
                // String names for font styles to be used in error messages
            $this->style_names=array(
                FS_NORMAL =>'normal',
                FS_BOLD =>'bold',
                FS_ITALIC =>'italic',
                FS_BOLDITALIC =>'bolditalic');
 
            // File names for available fonts
            $this->font_files=array(
            FF_COURIER => array(FS_NORMAL =>'cour.ttf',
                FS_BOLD  =>'courbd.ttf',
                FS_ITALIC =>'couri.ttf',
                FS_BOLDITALIC =>'courbi.ttf' ),
            FF_GEORGIA => array(FS_NORMAL =>'georgia.ttf',
                FS_BOLD  =>'georgiab.ttf',
                FS_ITALIC =>'georgiai.ttf',
                FS_BOLDITALIC =>'' ),
            FF_TREBUCHE =>array(FS_NORMAL =>'trebuc.ttf',
                FS_BOLD  =>'trebucbd.ttf',
                FS_ITALIC =>'trebucit.ttf',
                FS_BOLDITALIC =>'trebucbi.ttf' ),
            FF_VERDANA  => array(FS_NORMAL =>'verdana.ttf',
                FS_BOLD  =>'verdanab.ttf',
                FS_ITALIC =>'verdanai.ttf',
                FS_BOLDITALIC =>'' ),
            FF_TIMES =>   array(FS_NORMAL =>'times.ttf',
                FS_BOLD  =>'timesbd.ttf',
                FS_ITALIC =>'timesi.ttf',
                FS_BOLDITALIC =>'timesbi.ttf' ),
            FF_COMIC =>   array(FS_NORMAL =>'comic.ttf',
                FS_BOLD  =>'comicbd.ttf',
                FS_ITALIC =>'',
                FS_BOLDITALIC =>'' ),
            FF_ARIAL =>   array(FS_NORMAL =>'arial.ttf',
                FS_BOLD  =>'arialbd.ttf',
                FS_ITALIC =>'ariali.ttf',
                FS_BOLDITALIC =>'arialbi.ttf' ) ,
            FF_VERA =>    array(FS_NORMAL =>'Vera.ttf',
                FS_BOLD  =>'VeraBd.ttf',
                FS_ITALIC =>'VeraIt.ttf',
                FS_BOLDITALIC =>'VeraBI.ttf' ),
            FF_VERAMONO => array(FS_NORMAL =>'VeraMono.ttf',
                FS_BOLD =>'VeraMoBd.ttf',
                FS_ITALIC =>'VeraMoIt.ttf',
                FS_BOLDITALIC =>'VeraMoBI.ttf' ),
            FF_VERASERIF=> array(FS_NORMAL =>'VeraSe.ttf',
                FS_BOLD =>'VeraSeBd.ttf',
                FS_ITALIC =>'',
                FS_BOLDITALIC =>'' ) ,
 
            /* Chinese fonts */
            FF_SIMSUN  =>